The TolTEC project: a millimeter wavelength imaging polarimeter (Conference Presentation)
The TolTEC project: a millimeter wavelength imaging polarimeter (Conference Presentation)
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TolTEC 项目：毫米波长成像旋光计（会议演示）
DOI：
10.1117/12.2313347
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
S. Simon
中科院分区：
文献类型：
--
作者：
G. Wilson;P. Ade;I. Aretxaga;J. Austermann;J. Bardin;P. Barry;J. Beall;M. Berthoud;Alan Braeley;S. Bryan;Alexandra Burkott;John Bussan;E. Castillo;M. Chavez;N. DeNigris;S. Doyle;M. Eiben;D. Ferrusca;L. Fissel;Jiansong Gao;W. Gear;V. Gómez;S. Gordon;C. Groppi;R. Gutermuth;M. Heyer;Stephen Kuczarski;Mohsen Hosseini;S. Offner;A. Pope;F. Schloerb;K. Souccar;Yuping Tang;G. Wallace;M. Yun;P. Mauskopf;R. Kelso;J. Knapp;E. Lunde;H. Mani;Justin Mathewson;E. Scannapieco;M. Underhill;J. Hubmayr;M. Vissers;D. Hughes;Ivan Rodriguez Montoya;D. Sánchez;M. Velázquez;S. Ventura;E. Pascale;S. Rowe;C. Tucker;G. Novak;J. McMahon;S. Simon
毫米波长的天空揭示了宇宙整个可观测历史上所有空间尺度的结构形成的初始阶段。在过去的20年里，毫米波长探测器和摄像系统的进步使该领域向前迈进了一大步--特别是在宇宙微波背景研究方面--但测绘速度、灵敏度和分辨率方面的限制一直困扰着天体物理现象的研究。事实上，过去20年来进行的地面毫米波长调查由于固有的偏差而造成的限制，继续促使人们需要更深更广的地图，以提高角度分辨率。Toltec是一款新型相机，将填充50米直径大毫米望远镜(LMT)的焦平面，并在2.0、1.4和1.1 mm波长提供同步偏振敏感成像。该仪器目前正在建造中，是一个低温冷却的接收器，装有三个独立的千像素动态电感探测器(KIDS)阵列，通过一系列硅透镜和二向色分光器与望远镜耦合。Toltec将于2019年初在LMT上安装和调试，在那里它将成为一种设施仪器，还将执行一系列100小时的“遗产调查”，其数据将公开提供。这一系列中最初的四项调查：云到核遗产调查、细丝场遗产调查、超深遗产调查和大型结构调查目前正在由Toltec科学团队成员协调的天文学家公共工作组中确定。这些调查的数据收集将于2019年底开始，数据发布计划在2020年底和2021年。在这里，我们描述了仪器的概念，提供了关键子系统的性能数据，并概述了最初的四个遗产调查概念的科学、时间表和计划。
The mm-wavelength sky reveals the initial phase of structure formation, at all spatial scales, over the entire observable history of the Universe. Over the past 20 years, advances in mm-wavelength detectors and camera systems have allowed the field to take enormous strides forward – particularly in the study of the Cosmic Microwave Background – but limitations in mapping speeds, sensitivity and resolution have plagued studies of astrophysical phenomena. In fact, limitations due to inherent biases in the ground-based mm-wavelength surveys conducted over the last 2 decades continue to motivate the need for deeper and wider-area maps made with increased angular resolution. TolTEC is a new camera that will fill the focal plane of the 50m diameter Large Millimeter Telescope (LMT) and provide simultaneous, polarization-sensitive imaging at 2.0, 1.4, and 1.1mm wavelengths. The instrument, now under construction, is a cryogenically cooled receiver housing three separate kilo-pixel arrays of Kinetic Inductance Detectors (KIDs) that are coupled to the telescope through a series of silicon lenses and dichroic splitters. TolTEC will be installed and commissioned on the LMT in early 2019 where it will become both a facility instrument and also perform a series of 100 hour “Legacy Surveys” whose data will be publicly available. The initial four surveys in this series: the Clouds to Cores Legacy Survey, the Fields in Filaments Legacy Survey, the Ultra-Deep Legacy Survey and the Large Scale Structure Survey are currently being defined in public working groups of astronomers coordinated by TolTEC Science Team members. Data collection for these surveys will begin in late 2019 with data releases planned for late 2020 and 2021. Herein we describe the instrument concept, provide performance data for key subsystems, and provide an overview of the science, schedule and plans for the initial four Legacy Survey concepts.